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Does the focal length of a lens depend on the colour of light used?
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- Words:
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- Submitted:
- Wed Feb 04 2009
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... Physics coursework PSA3 experiment Does the focal length of a lens depend on the colour of light used? Aim The aim is to investigate the Focal lengths of light in the visible spectrum. Introduction I intend on using light with as much difference in wavelength as possible so that I can compare my results with more ease and so that errors in my experiment do not lead to overlapping results that have no distinct difference in them. However as I am restricted to a school laboratory I shall be using light on the part of the electromagnetic spectrum visible to the human eye. This is because filters for red and blue light can be found and used easily and have a large enough wavelength difference (red light with a wavelength of around 700nm whilst blue light is nearly 400nm) as they are on opposite parts of the visible spectrum to each other. Before I
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